Stevens hit a contested jumper at the top of the key with 41 seconds left and the shot clock set to expire. Watkins then broke past Iowa's defense for an uncontested dunk and a 73-69 lead with 22 seconds to go.

Stevens' free throws with 4.3 seconds left pushed Penn State's lead back to four points.

Cook had 23 points and 12 rebounds for Iowa, which suffered its fourth loss in five games. The Hawkeyes turned it over 18 times.

"I thought out decision-making at times was really poor," Iowa coach Fran McCaffery said. "We just have to be better with our execution in a lot of ways."